Click on image for full size
Illustration by Lisa Gardiner
Sea snakes search for home!
News story originally written on October 4, 2002
Plans to move sea snakes between Pacific islands might not work because some snakes have a natural desire to go home!
The sea snakes live in shallow water next to Pacific Ocean islands. People have been fishing for the snakes too much and now there are no more in the shallow water next to some islands. To solve this problem, some snakes will be moved from places where there are many snakes to places where there are none.
However, the snakes might not want to move! Scientists say certain types of sea snakes have an instinct to always go back home. They have homing behavior, which means that they can find their way over long distances, and so they could get back to their home island.
Other animals have homing behavior too, such as crocodiles, sea turtles, whales and homing pigeons. Some can find their way because they remember the landmarks they must pass. Others have a special ability to find specific locations, even without landmarks. Scientists believe these animals might be using the positions of stars or the Earth’s magnetic field to point them in the right direction.
Shop Windows to the Universe Science Store!
Learn about Earth and space science, and have fun while doing it! The games
section of our online store
includes a climate change card game
and the Traveling Nitrogen game
You might also be interested in:
The Earth has a magnetic field with north and south poles. The Earth's magnetic field reaches 36,000 miles into space. The magnetic field of the Earth is surrounded in a region called the magnetosphere....more
It was another exciting and frustrating year for the space science program. It seemed that every step forward led to one backwards. Either way, NASA led the way to a great century of discovery. Unfortunately,...more
The Space Shuttle Discovery lifted off from Kennedy Space Center on October 29th at 2:19 p.m. EST. The weather was great as Discovery took 8 1/2 minutes to reach orbit. This was the United States' 123rd...more
A moon was discovered orbiting the asteroid, Eugenia. This is only the second time in history that a satellite has been seen circling an asteroid. A special mirror allowed scientists to find the moon...more
Will Russia ever put the service module for the International Space Station in space? NASA officials want an answer from the Russian government. The necessary service module is currently waiting to be...more
A coronal mass ejection (CME) happened on the Sun early last month. The material that was thrown out from this explosion passed the ACE spacecraft. The SWICS instrument on ACE has produced a new and very...more
J.S. Maini of the Canadian Forest Service called forests the "heart and lungs of the world." This is because forests filter air and water pollution, absorb carbon dioxide, release oxygen, and maintain...more